RDT&E Project · President's Budget PB2027

On Orbit Servicing, Mobility, and Logistics (OOSML)

Project 640016·PE 1203955SF — Space Access, Mobility & Logistics (SAML)·U.S. Space Force·BA4
FY2027 Request
$0.0M
▼ 100% vs FY2026
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Project 640016 — On Orbit Servicing, Mobility, and Logistics (OOSML) requests $0.0M in FY2027, 0.0% of the $9.7M requested for program element 1203955SF, down 100% on FY2026. 1 R-2A activity decomposes the request.

FY2027 Request
$0.0M
▼ 100% vs FY2026
FY2026 Enacted
$10.0M
▼ 48% vs FY2025
FY2025 Actual
$19.3M
Prior year
Project detail

What project 640016 buys

On-Orbit Servicing, Mobility, and Logistics advances neglected support capabilities in the space domain, ensuring asset availability to the warfighter. The initial thrust for On-Orbit SML is a service architecture ensuring prepared systems can replenish energy, as needed, to maintain operator proficiency and sustained readiness in a contested domain with flexibility to meet the increased challenges of conflict. This capability provides USSPACECOM the requisite supply chain to de-constrain operations currently limited by a fixed fuel budget, enabling movement and maneuver Dynamic Space Operations for critical National Security Space assets. Advancing an on-orbit refueling architecture enables a prepared architecture for subsequent On-Orbit SML lines of effort including mobility, relocation, repair and disposal. Additionally, as refueling requires the application of Rendezvous, Proximity Operations and Docking (RPOD) technology, the techniques, tactics and procedures (TTPs) attained through refueling simplify and accelerate subsequent capabilities. In tandem with efforts to qualify and onboard refueling onto a "services contract” for ongoing propellent replenishment missions, On-Orbit SML will maintain connectivity to the burgeoning commercial market to capitalize on industry advancement to qualify and onboard additional on-orbit capabilities as they mature. As an "anchor tenant” this may include providing last-mile development funding for government purpose modifications, demonstrations, landscape assessments and architecture development. Due to client variations in mission, orbit, configuration and security, On-Orbit SML services will not be a "one size fits all” approach and will require an enduring programmatic and systems engineering investment to meet customer requirements.

R-3 lines of work
  • Product Development
  • Management Services
Funding trajectory

Project 640016 funding, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.

019.3FY25ACTUAL10.0FY26ENACTED0.0FY27REQUEST0.0FY280.0FY290.0FY300.0FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual19.3
FY2026Enacted10.0
FY2027Request0.0
FY2028Outyear0.0
FY2029Outyear0.0
FY2030Outyear0.0
FY2031Outyear0.0
Inside the project

1 accomplishment / planned program

The R-2A exhibit — the only level of the budget that describes work that has not happened yet. Activities carry the prior, current and budget year only, no five-year plan. Coverage is partial across the corpus, so count activities, never total them.

On-Orbit Servicing, Mobility & Logistics (SML)
FY2025 actual$15.4M
FY2026 enacted$0.0M
FY2027 request$0.0M